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A new fabrication method of an intermediate temperature proton exchange membrane by the electrospinning of CsH₂PO₄

Lookup NU author(s): Asier Goni Urtiaga, Emeritus Professor Keith Scott

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Abstract

A novel method for the fabrication of an intermediate temperature proton conducting composite membrane was developed. Cesium dihydrogen phosphate, CsH₂PO₄ (CDP), was electrospun to obtain a highly interconnected proton conducting fibre mat. CsH₂PO₄ was heat treated above its dehydration temperature (T_dehy 230 °C) in order to induce a partial polymerisation. The partially polymerised material produced a viscous aqueous solution which could be electrospun in the absence of a carrier polymer, thus leading to pure inorganic fibres. The electrospun fibre mats were characterised in terms of composition, structure and morphology by XRD, MAS NMR and SEM and their proton conductivity determined by electrochemical impedance spectroscopy. The electrospun fibres (CDP_f) showed a maximum proton conductivity of 8 × 10⁻³ S cm⁻¹ at 250 °C.

Publication metadata

Author(s): Goñi-Urtiaga A, Scott K, Cavaliere S, Jones DJ, Roziére J

Publication type: Article

Publication status: Published

Journal: Journal of Materials Chemistry A

Year: 2013

Volume: 1

Pages: 10875-10880

Print publication date: 01/08/2013

ISSN (print): 2050-7488

ISSN (electronic): 2050-7496

Publisher: RSC Publications

URL: http://dx.doi.org/10.1039/C3TA11851G

DOI: 10.1039/C3TA11851G

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